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2 years ago

If x+ 1=23 what is the value of 3x +3?

1 answer:

8 0

$\bf x+1=23\qquad \qquad \stackrel{3(x+1)}{3x+3}\qquad \qquad \stackrel{\downarrow }{3}(x+1)=\stackrel{\downarrow }{3}(23)$

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Please solve the attached problem and chose from the answers below.

DanielleElmas [232]

Answer:

Step-by-step explanation:

$\frac{5}{4t}-\frac{t+4}{10t^2}=\frac{5\left(10t^2\right)-4t\left(t+4\right)}{40t^3}=\frac{2t\left(25t-2\left(t+4\right)\right)}{40t^3}=\frac{\left(25t-2t-8\right)}{20t^2}=\frac{23t-8}{20t^2}$

4 0

2 years ago

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If P= (2, 7) and Q= (2, -3), which could be the coordinates of R if triangle PQR is isosceles?

ale4655 [162]

Answer: c

Step-by-step explanation:

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2 years ago

The measurement of the angles of RSC are given by the expression in the table

Fudgin [204]

Answer:

see explanation

Step-by-step explanation:

The sum of the 3 angles in the triangle = 180°

Sum the 3 angles and equate to 180

31 + x + 4 + 3x + 9 = 180, that is

4x + 44 = 180 ( subtract 44 from both sides )

4x = 136 ( divide both sides by 4 )

x = 34

Thus

∠ S = x + 4 = 34 + 4 = 38°

∠ T = 3x + 9 = 3(34) + 9 = 102 + 9 = 111°

7 0

3 years ago

A local technical school has 856 students. They expect 700 guests for a special speaker. The custodian has set up 1,500 chairs.

Delicious77 [7]

Answer:

56 chairs

Step-by-step explanation:

856+700=1556 <--- expected count

chairs set up= 1500

1556-1500= 56 more chairs

4 0

3 years ago

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Marta can vacuum the house in 30 min. It takes her daughter 45 min to vacuum the house. How long would it take them if they

Mamont248 [21]

Answer:

Step-by-step explanation:

This problem is on combined work rate

given that

Marta can vacuum the house in 30 min

then her rate= 1/30

Also, her daughter will take 45 min to vacuum the house

her daughter's rate will be = 1/45

then the combined work rate is

1/30+1/45=1/T

30+45/30*45=1/T

75/1350= 1/T

1/18=1/T

This means that they will both take 18 minutes working together to vacum a house

8 0

2 years ago